Our tour guide, Nima, was great. It was only his second tour by himself and he was knowledgeable, friendly, flexible, and customer service oriented. I am from DC but took people new to DC on trip. It was a nice express tour. It gave my party a tour where they could get their bearings of the city. I like the open cart so you can get a breeze, hop on and off easily, and have a small group. I say it is a good overview but would recommend another/longer tour if you would like to dig in at the sites. There is not enough time to stop for lengthy periods at sites. You would probably need one of the 3.5/4 hour tours. I liked getting an overview and then deciding what my party wanted to see more of the next day.